Across-section of a light reflector is a parabola. the bulb is located at the focus. suppose the bulb is located 11 in from the vertex of the reflector. use this information to make the following determinations. model a cross section of the reflector by writing an equation of a parabola that opens upward and has its vertex at the origin.

11. a particular type of cell doubles in number every hour. which function can be used to find the number of cells present at the end of h hours if there are initially 4 of these cells? a. n = 4 ()" b. n = 4(2)" c. n = 4 + (2)" din = 4 +"

Hi i’m not sure how to do question 20 if u could explain how to do it that’d b great

Will mark brainliest for correct answer! i have been on this problem for an hour and can't find the answer. i'm begging here! incase you cant read the instructions in the picture because of too much or too little lighting: note: enter your answer and show all the steps that you use to solve this problem in the space provided.write a list of steps that are needed to find the measure of b. provide all steps as clear as possible, !